// Module names are of the form poly_<inkscape-path-id>().  As a result,
// you can associate a polygon in this OpenSCAD program with the corresponding
// SVG element in the Inkscape document by looking for the XML element with
// the attribute id="inkscape-path-id".

// fudge value is used to ensure that subtracted solids are a tad taller
// in the z dimension than the polygon being subtracted from.  This helps
// keep the resulting .stl file manifold.
fudge = 0.1;

module poly_outline()
{
translate([35.01, -17.5, 0])
      polygon([[-34.993000,-7.750540],[-35.002600,-7.283950],[-30.390825,-6.787054],[-19.036880,-5.237750],[-5.577521,-2.848014],[4.953350,-0.739700],[12.407086,0.839569],[19.933820,2.756390],[29.405920,5.806369],[35.001720,7.750540],[35.002600,7.248370],[29.490142,5.319456],[20.070500,2.275930],[12.517434,0.353189],[5.050970,-1.227980],[-5.481264,-3.336864],[-18.958800,-5.729930],[-30.353692,-7.267481],[-34.993080,-7.750540]]);
}

infty = 200;

module outline_border() {
	rotate([0, -90, 0])
	linear_extrude(height=0.5) poly_outline();
}

module body() {
	// main shape
	rotate_extrude(angle = 210)
	rotate([0, 0, 90])
	poly_outline();

	// inner side supports
	for (i = [-1,1]) scale([1, i, 1])
	for (y = [0:0.25:3.5])
		translate([0, y, 0])
		outline_border();
}

difference() {
	body();
	translate([5, -infty/2,-infty/2]) cube(infty);
}